Haha a Sony VS Microsoft thread in the SONY forum = FAIL. (Mainly because you're wanting to hear Sony as the answer I guess).
Anyway, both are terrible companies. As with most multinational corporations, they only care about profits and they drain the resources and pollute everything they touch. Sure they do corporate philantrophy (kan't spellz no mores) but it is a band-aid for the bullet wound they cause to the 2nd/3rd world countries they exploit cheap labour from. But, I'm a hypocrit because I still use their products anyway.
I think it's hilarious that Rock_On says people hate microsoft because they've taken monopoly in the computer market, except that Apple did that before MS did and no one seemed to care. Also, Sony tries to monopolise on everything and no they didn't invent DVD's and Blu-ray (solely). AND just because sony copyrighted the term "walkman" doesn't mean they invented it, it's just that there's was the first commercial successful one.
I'm sure you can list a number of things about both companies that make them bad, in particular these days, the two seem to have hit their creative thresholds, with both companies using the templates for other companies on their products: sony's been doing this since CD's became popular and MS with Vista and Zune, which borrow alot of features and design cues from Leopard OS and the Ipod.